🛡️ CVE-2025-14819
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-295 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

When doing TLS related transfers with reused easy or multi handles and altering the `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE CWE-295
Public Exploit ✅ No
Source NVD
Published 2026-01-08
Updated 2026-06-02
Modified 2026-01-20

Affected Packages

Software From version Fixed in
curl 7.87.0 8.18.0

References

Vendor Advisory, Mitigation, Patch https://curl.se/docs/CVE-2025-14819.html
Mailing List, Third Party Advisory, Mitigation, Patch http://www.openwall.com/lists/oss-security/2026/01/07/5

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